analyzing-network-packet-captures

analyzing-network-packet-captures is a skill for Claude Code, Codex from withcrux/agentHack-skills. It costs 59 tokens per session (1,507 once invoked), scanned B, original, no licence file.

A guide for examining PCAP files and live network captures with Wireshark and tshark. PCAP files contain recorded network traffic, while live captures show traffic as it happens.

In plain words
What is it for?
Use it for network forensics, such as reconstructing web sessions, looking for malicious traffic patterns, and detecting protocol anomalies.
Why use it?
It helps investigate suspicious connections, unusual protocol behavior, and possible exposure of credentials in isolated lab environments.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it for network forensics, such as reconstructing web sessions, looking for malicious traffic patterns, and detecting protocol anomalies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/withcrux/agenthack-skills/analyzing-network-packet-captures
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add withcrux/agentHack-skills --skill analyzing-network-packet-captures
Clone the repo
git clone --depth 1 https://github.com/withcrux/agentHack-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for analyzing-network-packet-captures

README.md
[![agentmods](https://agentmods.dev/badge/skills/withcrux/agenthack-skills/analyzing-network-packet-captures/github.svg)](https://agentmods.dev/skills/withcrux/agenthack-skills/analyzing-network-packet-captures)
Your own site
<a href="https://agentmods.dev/skills/withcrux/agenthack-skills/analyzing-network-packet-captures"><img src="https://agentmods.dev/badge/skills/withcrux/agenthack-skills/analyzing-network-packet-captures/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for analyzing-network-packet-captures

Your own site · 80×15
<a href="https://agentmods.dev/skills/withcrux/agenthack-skills/analyzing-network-packet-captures"><img src="https://agentmods.dev/badge/skills/withcrux/agenthack-skills/analyzing-network-packet-captures.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,507 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 3 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.01507
Opus 5 $0.00030 $0.00754
Sonnet 5 $0.00012 $0.00301
Haiku 4.5 $0.00006 $0.00151

Measured 10d ago against content hash adde9ac3e353, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

analyzing-network-packet-captures scanned grade B with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl http://target:80/login -d "username=admin&password=secret"

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Harvests environment variablesmediumData exfiltration

Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.

extract credentials, reconstruct HTTP sessions, identify malicious traffic

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://target:80/login -d "username=admin&password=secret"
skills/analyzing-network-packet-captures/SKILL.md · 178 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 178 lines · 59 tokens per session scan B adde9ac3e353

Subscribe to this mod's changes

analyzing-network-packet-captures is a skill published in the GitHub repository withcrux/agentHack-skills (5 stars, last pushed 5mo ago), with no licence file. It adds 59 tokens to every session and 1,507 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 3 findings (sends data to an external url, harvests environment variables, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

analyzing-network-packets-with-scapy

Use Scapy to craft, send, sniff, and dissect TCP/UDP/ICMP/DNS packets, analyze pcap files, implement SYN scans, and detect anomalous traffic such as fragmented or malformed packets. Use when performing authorized network reconnaissance, protocol-level forensic analysis, or building traffic anomaly detection during…

mukul975/Anthropic-Cybersecurity-Skills · 75 tokens

analyzing-network-traffic-with-wireshark

Captures and analyzes network packet data using Wireshark and tshark to identify malicious traffic patterns, diagnose protocol issues, extract artifacts, and support incident response investigations on authorized network segments.

mukul975/Anthropic-Cybersecurity-Skills · 49 tokens

analyzing-network-packets-with-scapy

Craft, send, sniff, and dissect network packets using Scapy for protocol analysis, network reconnaissance, and traffic anomaly detection in authorized security testing.

autohandai/community-skills · 39 tokens

analyzing-network-packets-with-scapy

A guide to using Scapy, a Python library for creating, capturing, reading, and examining network packets. Packets are the small units of data sent between computers over a network.

killvxk/cybersecurity-skills-zh · 55 tokens

analyzing-network-traffic-with-wireshark

A guide for using Wireshark and tshark to capture and inspect network packets. Packets are the small pieces of data sent across a network; the guide focuses on authorized troubleshooting and security investigations.

killvxk/cybersecurity-skills-zh · 58 tokens

analyzing-network-packets-with-scapy

Craft, send, sniff, and dissect network packets using Scapy for protocol analysis, network reconnaissance, and traffic anomaly detection in authorized security testing.

26zl/cybersec-toolkit · 39 tokens